{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-be4zgo80","versions":[{"created_at":"2026-06-04T05:51:34Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.1→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"c0ce716f03d13abc6f17a05ec7d987aa11e5fdfc12aaf2b0f42a007468201145","version":10},{"created_at":"2026-06-04T04:53:21Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 70.5→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"37f62a4b798e4570c7cc538c733c26d28742e014f10b58b11a6ebfa461e3c2af","version":9},{"created_at":"2026-06-04T04:53:21Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"d6de1d8e4c9d563fd8b6e3b0604c4fc3b1074cb029cbe76d352405302afbc2f2","version":8}]}